[readconf.c readconf.h ssh.1 ssh_config.5 sshconnect.c]
Move SSH Fingerprint Visualization away from sharing the config option
CheckHostIP to an own config option named VisualHostKey.
While there, fix the behaviour that ssh would draw a random art picture
on every newly seen host even when the option was not enabled.
prodded by deraadt@, discussions,
help and ok markus@ djm@ dtucker@
[ssh_config.5 key.h readconf.c readconf.h ssh-keygen.1 ssh-keygen.c key.c
sshconnect.c]
Introduce SSH Fingerprint ASCII Visualization, a technique inspired by the
graphical hash visualization schemes known as "random art", and by
Dan Kaminsky's musings on the subject during a BlackOp talk at the
23C3 in Berlin.
Scientific publication (original paper):
"Hash Visualization: a New Technique to improve Real-World Security",
Perrig A. and Song D., 1999, International Workshop on Cryptographic
Techniques and E-Commerce (CrypTEC '99)
http://sparrow.ece.cmu.edu/~adrian/projects/validation/validation.pdf
The algorithm used here is a worm crawling over a discrete plane,
leaving a trace (augmenting the field) everywhere it goes.
Movement is taken from dgst_raw 2bit-wise. Bumping into walls
makes the respective movement vector be ignored for this turn,
thus switching to the other color of the chessboard.
Graphs are not unambiguous for now, because circles in graphs can be
walked in either direction.
discussions with several people,
help, corrections and ok markus@ djm@
[readconf.c readconf.h sshconnect2.c]
promote rekeylimit to a int64 so it can hold the maximum useful limit
of 2^32; report and patch from Jan.Pechanec AT Sun.COM, ok dtucker@
[readconf.c]
Honour activep for times (eg ServerAliveInterval) while parsing
ssh_config and ~/.ssh/config so they work properly with Host directives.
From mario.lorenz@wincor-nixdorf.com via bz #1275. ok markus@
[canohost.c channels.c cipher-acss.c defines.h dns.c gss-genr.c]
[gss-serv-krb5.c gss-serv.c log.h loginrec.c logintest.c readconf.c]
[servconf.c ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh-rand-helper.c]
[ssh.c sshconnect.c sshd.c openbsd-compat/bindresvport.c]
[openbsd-compat/bsd-arc4random.c openbsd-compat/bsd-misc.c]
[openbsd-compat/getrrsetbyname.c openbsd-compat/glob.c]
[openbsd-compat/mktemp.c openbsd-compat/port-linux.c]
[openbsd-compat/port-tun.c openbsd-compat/readpassphrase.c]
[openbsd-compat/setproctitle.c openbsd-compat/xmmap.c]
make the portable tree compile again - sprinkle unistd.h and string.h
back in. Don't redefine __unused, as it turned out to be used in
headers on Linux, and replace its use in auth-pam.c with ARGSUSED
[clientloop.c ssh.1 ssh.c channels.c ssh_config.5 readconf.h session.c
channels.h readconf.c]
add ExitOnForwardFailure: terminate the connection if ssh(1)
cannot set up all requested dynamic, local, and remote port
forwardings. ok djm, dtucker, stevesk, jmc
[readconf.c]
raise error when the user specifies a RekeyLimit that is smaller than 16
(the smallest of our cipher's blocksize) or big enough to cause integer
wraparound; ok & feedback dtucker@
[auth-options.c includes.h misc.c misc.h readconf.c servconf.c]
[serverloop.c ssh.c ssh_config.5 sshd_config.5 configure.ac]
two changes to the new ssh tunnel support. this breaks compatibility
with the initial commit but is required for a portable approach.
- make the tunnel id u_int and platform friendly, use predefined types.
- support configuration of layer 2 (ethernet) or layer 3
(point-to-point, default) modes. configuration is done using the
Tunnel (yes|point-to-point|ethernet|no) option is ssh_config(5) and
restricted by the PermitTunnel (yes|point-to-point|ethernet|no) option
in sshd_config(5).
ok djm@, man page bits by jmc@
[auth-options.c auth-options.h channels.c channels.h clientloop.c]
[misc.c misc.h readconf.c readconf.h scp.c servconf.c servconf.h]
[serverloop.c sftp.c ssh.1 ssh.c ssh_config ssh_config.5 sshconnect.c]
[sshconnect.h sshd.8 sshd_config sshd_config.5]
Add support for tun(4) forwarding over OpenSSH, based on an idea and
initial channel code bits by markus@. This is a simple and easy way to
use OpenSSH for ad hoc virtual private network connections, e.g.
administrative tunnels or secure wireless access. It's based on a new
ssh channel and works similar to the existing TCP forwarding support,
except that it depends on the tun(4) network interface on both ends of
the connection for layer 2 or layer 3 tunneling. This diff also adds
support for LocalCommand in the ssh(1) client.
ok djm@, markus@, jmc@ (manpages), tested and discussed with others
[clientloop.c readconf.c readconf.h ssh.c ssh_config.5]
add ControlMaster=auto/autoask options to support opportunistic
multiplexing; tested avsm@ and jakob@, ok markus@
[hostfile.c hostfile.h readconf.c readconf.h ssh.1 ssh_config.5]
[sshconnect.c sshd.8]
add support for hashing host names and addresses added to known_hosts
files, to improve privacy of which hosts user have been visiting; ok
markus@ deraadt@
[auth-options.c channels.c channels.h clientloop.c compat.c compat.h]
[misc.c misc.h readconf.c readconf.h servconf.c ssh.1 ssh.c ssh_config.5]
[sshd_config.5]
bz#413: allow optional specification of bind address for port forwardings.
Patch originally by Dan Astorian, but worked on by several people
Adds GatewayPorts=clientspecified option on server to allow remote
forwards to bind to client-specified ports.
[clientloop.c misc.h readconf.c readpass.c ssh.c ssh_config.5]
Add option for confirmation (ControlMaster=ask) via ssh-askpass before
opening shared connections; ok markus@
[channels.c channels.h clientloop.c clientloop.h includes.h readconf.c]
[readconf.h scp.1 sftp.1 ssh.1 ssh.c ssh_config.5]
implement session multiplexing in the client (the server has supported
this since 2.0); ok markus@
[readconf.c readconf.h servconf.c servconf.h session.c session.h ssh.c
ssh_config.5 sshd_config.5]
bz #815: implement ability to pass specified environment variables from
the client to the server; ok markus@
[readconf.c readconf.h ssh-keysign.c ssh.c]
perform strict ownership and modes checks for ~/.ssh/config files,
as these can be used to execute arbitrary programs; ok markus@
NB. ssh will now exit when it detects a config with poor permissions
[clientloop.c clientloop.h readconf.c readconf.h scp.1 sftp.1 ssh.1]
[ssh.c ssh_config.5]
application layer keep alive (ServerAliveInterval ServerAliveCountMax)
for ssh(1), similar to the sshd(8) option; ok beck@; with help from
jmc and dtucker@
[readconf.c readconf.h scp.1 servconf.c servconf.h sftp.1 ssh.1]
[ssh_config.5 sshconnect.c sshd.c sshd_config.5]
rename keepalive to tcpkeepalive; the old name causes too much
confusion; ok djm, dtucker; with help from jmc@
[readconf.c readconf.h ssh.1 ssh.c ssh_config.5]
remote x11 clients are now untrusted by default, uses xauth(8) to generate
untrusted cookies; ForwardX11Trusted=yes restores old behaviour.
ok deraadt; feedback and ok djm/fries
Damien Miller
Darren Tucker